Base cup for bottles



FIG. 1 is a perspective view of a base cup for bottles, showing my new design, the broken lines showing a bottle for illustrative purposes only, the bottle forming no part of the claimed design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof. 

The ornamental design for a base cup for bottles, as shown and described. 